Concept:Understanding the fundamental principles guiding the design of an educational curriculum.Explanation:A curriculum is essentially a roadmap for education, outlining what students should learn and how they should learn it. When constructing a curriculum, educators follow certain guiding principles to ensure it is effective and beneficial. These principles focus on the learner, the learning process, and the overall educational goals. For instance, principles like being child-centered (focusing on the student's needs and interests), promoting activity and creativity, and ensuring flexibility are crucial. However, a 'teacher-centeredness' principle, where the teacher is the sole source of knowledge and students are passive recipients, is generally not considered a sound principle for modern curriculum construction. It goes against the idea of active learning and student engagement.Answer:D. Principle of teacher centredness.